itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. Framework Integration For web applications, it is common in a transaction. Warning Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling-back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note By default this only affects the current connection. If the PRAGMA being executed is not persistent

itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. Framework Integration For web applications, it is common in a transaction. Warning Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling-back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note By default this only affects the current connection. If the PRAGMA being executed is not persistent

itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. 1.5.12 Framework Integration For web applications, it a transaction. Warning: Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling- back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note: By default this only affects the current connection. If the PRAGMA being executed is not

itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. 1.6. Database 51 peewee Documentation, Release 3.3.0 a transaction. Warning: Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling- back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. 122 Chapter 1. Contents: peewee Documentation, Release 3.3.0 Note: By default this only affects

itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. 1.6.12 Framework Integration For web applications, it a transaction. Warning: Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling- back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. 1.14. API Documentation 123 peewee Documentation, Release 3.4.0 Note: By default this only affects

itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. Framework Integration For web applications, it is common in a transaction. Warning Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling-back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note By default this only affects the current connection. If the PRAGMA being executed is not persistent

itself, does not do any socket operations that would be a candidate for non-blocking. Async has no effect one way or the other on SQLite databases. 1.5.12 Framework Integration For web applications, it a transaction. Warning: Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling- back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note: By default this only affects the current connection. If the PRAGMA being executed is not

in a transaction. Warning Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling-back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note By default this only affects the current connection. If the PRAGMA being executed is not persistent have a unique constraint. Note Take care with foreign keys in SQLite. By default, ON DELETE has no effect, which can have surprising (and usually unwanted) effects on your database integrity. This can affect

in a transaction. Warning Calls to transaction cannot be nested. Only the top-most call will take effect. Rolling-back or committing a nested transaction context-manager has undefined behavior. savepoint() PRAGMA query will also be executed whenever a new connection is opened, ensuring it is always in-effect. Note By default this only affects the current connection. If the PRAGMA being executed is not persistent have a unique constraint. Note Take care with foreign keys in SQLite. By default, ON DELETE has no effect, which can have surprising (and usually unwanted) effects on your database integrity. This can affect

Parameters: Parameters: transaction_type (str) – Specify isolation level. This parameter only has effect on SQLite databases, and furthermore, only affects the outer-most call to atomic(). For more information